Loading device



Feb. 14, 1928.

.J. YOUNKMAN ET AL LOADING DEVICE Filed Jamze. 1927 2 Sheets-Sheet l 'U"31142-0 l cfa/liz 15u/z man l .MEQ/gif Stroll we Feb. 14, 1928.1,658,873

J. YoUNKMAN ET AL LOADING DEVI CE @not we Patented Feb. 14, 1928.

. u.N1TED1ysTATI-;s

. JOHN YoUNK-MAN AND GEORGE w. HARGETT, Carnon-ENCE, KANSAS.

LOADING. DEVICE.

, applicati@ inea kJanuary 29, i927. serial No. `164,599.k

This invention relates V to new andfuseful improvements in loadingdevices, andv particularly to ldevices forloading trucks.

One object is to provide vaI device of this character which is mountedyon a truck, and which is operated to lift an object from the ground anddeposit such object on the truck, by. a single operating mechanism.

Another object is to provide a device of this character which is simplein construction, durable and efficient in operation, and which isautomatic in its movement to place a lifted objectfabove a truck.

l Other objects and advantages will be apparent from the followingdescription when taken in connection-with the accompanying drawings.

ln the drawings:

Figure 1 is a side elevation of the loading device, mounted on a truck,and in position to lift an object from the ground.,

Figure 2 is a side elevation of the device, showing the parts in theposition assumed when the object lifted is suspended over the truck. v

Figure 3 is atop plan view of the device, in the posit-ion of Figure 1.n

Figur-e 4 is an enlarged vertical sectional detail view on the linelf--et of Figure 3,

showing the pull rope brake.

Figure 5 is a longitudinal sectional view through one of the slidablebraces.

Referring particularly to the accompany ing drawings, 10 represents theplat-form of an automobile, or other truck, and 11 the cross sillsthereof, these sills projecting beyond the sides of the platform, asclearly shown in the drawings. f

Pivotally connected at their lower ends to the projecting ends kof therear sill 11, are

the upwardly and inwardly converging sup-` porting posts or upright-s12. Disposedv transversely of the upper ends of the posts 12, and havingits ends extended downwardly, into the said upper ends of the posts, isa shaft 13, on which is supported a. large giooved pulley 111. rlhehorizontal portion of the shaft 13, at opposite sides ofthe pulley 1/1,is disposed through the eyes 15, on the upper ends ofthe tubular braces16. Movably connected to 4each of the projecting ends of the front sill11 is the lower end of a U-shaped member 17, the closed end of which isslidably disposed in the lowerend of one of the tubular braces 16, abolt 18 being disposed through the brace, and between the legsof therbjolt so that bight of `said bolt will engage therewith,y to limit theoutward sliding movement of thebrace and bolt, with respect to eachother. Encircling each bolt, and resting onthe projecting lend of thesaid sill, is a strong coil buffer spring 19," against which the lowerend of vthe tubularbrace engages, when the upper structure swingsinwardly over the truck platform, as will be more clearly describedhereinafter.

Mounted on the shaft 13 is a frame 20, and suspended on the rear endthereof is a yoke 21, to which is connectedV one end of a rope 22. Thisrope passes around or through a pulley block 23, said block beingadapted to be engaged with an object to be loaded'onto the truck. Therope then passes upwardly and over the large pulley 111 and thenceforwardly and downwardly, where it is secured to, and adapted to bewound on the drum 24. After passing over thelarge pulley 14, the Vropepasses through the channel 25, of the frame20,jand beneath a cam member'26, said cani member being mounted on a shaft 27 whose end projectsbeyond the side of the frame and has a radial arm 2S, to which isconnected a pull-rope or cord 29, said cord extending to a pointconvenient for the driver of the truck to reach. The drum24= is providedwith a crank handle 30 Vand the ordinary pawl and ratchet checking means31.

In the operation of the device, the truck is backed up to the place fromwhich the articles to be loadedV are to be obtained. The upriglits orposts 12 are swung so that they extend beyond the rear end of the truck.The block 23 is lowered into position to permit the engagement thereofwith the article to be lifted. The operator then rotates the crank ofthe winding drum, which elevates the article and the block 23. When thearticle is above the level of the platfcrrnfofv the truck, the operatorpulls the cord 29, whereby to force the cam into engagement with therope 22, and thus prevent any further movement of the rope around thepulleys. Further rotation of the drum causes the rope to exert rearwardpull on the upper ends of the posts 12, with the result that such postswill swing inwardly over the truck, while at the same time the braceswill properly telescope, until the tubular members 16 engage Awith thesprings 19, causing t-he compressionthereof, and the stopping of thelrearward movement of the device, without jar or jerk. This places thearticle directly above the platform of the truck, so that Jthe operatorsimply releases his hold on the cord so that the Cam is rocked out ofengagement with the rope. The article can then be easily lowered to theplatform of the truck.

What is claimed is:

A. truck loading device comprising a support mounted on the truck forswinging movement into and out of position over the truck, telescopingbraces between the support and truck, springs between the braces andtruck, and a lifting means on the support including a pull rope andmeans for `11 stopping the pulling action of the rope upon the load ata. predetermined point whereby the initial movement of said ropeelevates the load andthe final movement of said rope swings the supportinwardly over the truck.

In testimony whereof, we aiiiX our ysignatures. f

JOHN YOUNKMAN.

GEORGE W. HARGETT.

